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Up to 3 Analog I/O Units can be connected to provide analog inputs and outputs.
Each Unit provides 2 analog inputs and 1 analog output, so a maximum of 6 ana-
log inputs and 3 analog outputs can be achieved by connecting 3 Analog I/O
Units.
The analog input range can be set to 0 to 10 VDC, 1 to 5 VDC, or 4 to 20 mA with a
resolution of 1/256. (The open-circuit detection function can be used with the 1 to
5 VDC and 4 to 20 mA settings.)
The analog output range can be set to 0 to 10 VDC, –10 to 10 VDC, or 4 to 20 mA
with a resolution of 1/256.
A Temperature Sensor Unit can be connected to provide up to 6 inputs for tem-
perature input from sensors, such as thermocouples or platinum resistance
thermometers.
Host Link Communications The CPM1A PCs are compatible with the Host Link, which allows communica-
tions with personal computers. The CPM1A using the Host Link can also com-
municate with Programmable Terminal using host link commands.
An RS-232C Adapter is used for 1:1 communications and an RS-422 Adapter is
used for 1:N communications.
One-to-one PC Link A data link can be created with a data area in another CPM1A, CQM1, CPM1,
SRM1 or C200HS or C200HX/HE/HG PC. An RS-232C Adapter is used to make
the 1:1 connection.
NT Link Communications High-speed operations can be achieved by providing a direct access by con-
necting the CPM1A to the OMRON Programmable Terminal through the NT Link
Interface. An RS-232C Adapter is used for this connection.
Up to 3 CompoBus/S I/O Link Units can be connected to make the CPM1A a
Slave Device in a CompoBus/S Network. The I/O Link Unit has 8 input bits (inter-
nal) and 8 output bits (internal).
The CompoBus/S Network provides distributed CPU control based on a “PC +
compact PC” configuration, which is an improvement on the earlier distributed
I/O control based on a “PC + remote I/O” configuration. The distributed CPU
control makes equipment modular, so designs can be standardized, special
needs can be addressed, and modules can be replaced easily in the event of a
breakdown.
Master PC
CompoBus/S Master Unit
(or SRM1 CompoBus/S Master Control Unit)
CPM1A (Slave) CompoBus/S I/O Link Unit
CompoBus/S
Distributed CPU control
Standard Peripheral Devices The CPM1A uses the same Programming Consoles and SYSMAC Support
Software (SSS) as the C200H/HS, C200HX/HE/HG, CPM1, SRM1, and CQM1
PCs.
Programming operation is possible through the PT screen by using an OMRON
PT that has a built-in Programming Console function.
Analog I/O Units
Temperature Sensor
Units
CompoBus/S I/O Link
Units
Programming is Possible
Using the PT
CPM1A Features and Functions Section 1-1